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Get the date (a day before current time) in Bash
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if you have GNU date and i understood you correctly
$ date +%Y:%m:%d -d "yesterday"
2009:11:09
or
$ date +%Y:%m:%d -d "1 day ago"
2009:11:09
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How do you prevent IDisposable from spreading to all your classes?
...ble from spreading. Some classes need to be disposed, like AutoResetEvent, and the most efficient way is to do it in the Dispose() method to avoid the overhead of finalizers. But this method must be called somehow, so exactly as in your example the classes that encapsulate or contain IDisposable hav...
What exactly does the .join() method do?
I'm pretty new to Python and am completely confused by .join() which I have read is the preferred method for concatenating strings.
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Is Java Regex Thread Safe?
I have a function that uses Pattern#compile and a Matcher to search a list of strings for a pattern.
5 Answers
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Distinct not working with LINQ to Objects
...t smart when it comes to custom objects.
All it does is look at your list and see that it has two different objects (it doesn't care that they have the same values for the member fields).
One workaround is to implement the IEquatable interface as shown here.
If you modify your Author class like s...
What's the function like sum() but for multiplication? product()?
...on was added to the math module. See: math.prod().
Older info: Python 3.7 and prior
The function you're looking for would be called prod() or product() but Python doesn't have that function. So, you need to write your own (which is easy).
Pronouncement on prod()
Yes, that's right. Guido rejected ...
Add list to set?
... hashable objects. The objects have to be hashable so that finding, adding and removing elements can be done faster than looking at each individual element every time you perform these operations. The specific algorithms used are explained in the Wikipedia article. Pythons hashing algorithms are exp...
Why does 2 mod 4 = 2?
...ion. My term does not start for two more weeks so I can't ask a professor, and the suspense would kill me.
19 Answers
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Padding within inputs breaks width 100%
...for IE box-sizing property depends on IE Document Mode, it works on "IE8 Standards mode" & higher. So it will work in IE8 browser version also if document mode is "IE8 Standards mode". Hope this helps
– Sanjeev
Jun 25 '14 at 8:44
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Why do I get TypeError: can't multiply sequence by non-int of type 'float'?
...et a sale amount (by input) to be multiplied by a defined sales tax (0.08) and then have it print the total amount (sales tax times sale amount).
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